<html>

<head>
  <!-- bootstrap 4.x is supported. You can also use the bootstrap css 3.3.x versions -->
  <link rel="stylesheet" href="/static/css/bootstrap.min.css" />
  <link
    href="/static/css/fileinput.min.css"
    media="all"
    rel="stylesheet"
    type="text/css"
  />
  <script src="/static/js/jquery-3.2.1.min.js"></script>
  <script src="/static/js/piexif.min.js" type="text/javascript"></script>
  <script src="/static/js/sortable.min.js" type="text/javascript"></script>
  <script src="/static/js/purify.min.js" type="text/javascript"></script>
  <script src="/static/js/popper.min.js"></script>
  <script src="/static/js/bootstrap.min.js" type="text/javascript"></script>
  <script src="/static/js/fileinput.min.js"></script>
  <script src="/static/js/theme.js"></script>
</head>

<body style="width:100%;height:100%;text-align:center;">
    <div style="width:60%;height:30%;text-align:center;">
        <form action='#' method="post" enctype="multipart/form-data">
            <input id="file" name="file" type="file" class="file" data-msg-placeholder="选择文件">
        </form>
    </div>
</body>

</html>
